Typescript回调参数取决于其他选项参数

function fetchData(url: string, options?: { timeout: number }): void;
function fetchData(url: string, callback: (data: any) => void): void;
function fetchData(url: string, optionsOrCallback?: { timeout: number } | ((data: any) => void)): void {
  if (typeof optionsOrCallback === 'object') {
    // 处理选项参数的逻辑
    const { timeout } = optionsOrCallback;
    // ...
  } else if (typeof optionsOrCallback === 'function') {
    // 处理回调参数的逻辑
    const callback = optionsOrCallback;
    // ...
  }
}

// 使用示例
fetchData('https://example.com', { timeout: 5000 }); // 调用带选项参数的重载
fetchData('https://example.com', (data) => { /* 处理回调数据 */ }); // 调用带回调参数的重载